Nolin Lake State Park Beach offers accessible shore entry into the freshwater environment of Barren River Lake. The site features a sandy shoreline and is suitable for beginners, with depths starting at 1 metre. Visibility typically ranges between 5 and 15 metres, though low visibility can occur. Water temperatures vary significantly by season, with early April readings between 49 and 52°F. Divers and snorkellers should note that water below 55°F requires appropriate thermal protection for safety. The site is equipped with parking and showers for visitor convenience, and a typical session lasts approximately 45 minutes. Current conditions at the site are generally mild.

Moutardier Bluffs at Barren River Lake features rocky shorelines and vertical underwater structures. The site offers depths ranging from 2 metres to an average of 9 metres. Divers and snorkellers should expect variable visibility between 1 and 6 metres and mild currents. Summer surface temperatures are warm, though a thermocline typically develops between 15 and 30 feet deep. Access is available via both shore and boat, though boat access is recommended to reach quieter coves away from marina traffic. Due to active boat traffic, divers should exercise caution. Facilities at the site include parking, toilets, and showers.

Dismal Rock at the Barren River Lake tailwaters is a site defined by its unique geological formations near the Nolin Dam. Snorkellers should be aware that water temperatures here are often significantly lower than the main lake due to tailwater releases. The site is suited for intermediate snorkellers who can navigate moderate currents and potential down currents. Entry is via the shore, and visitors must remain vigilant regarding boat traffic, entanglement risks, and variable visibility. While calmer pockets offer improved conditions, the environment requires careful attention to the dynamic water flow characteristic of this tailwater area.

Peter Cave Rocky Inlet in Barren River Lake offers a freshwater environment featuring submerged timber and rock formations. The site reaches depths of up to 20 metres and is suitable for intermediate snorkellers. Conditions include mild currents and water temperatures that can range from 7 to 18 degrees Celsius during spring, necessitating appropriate thermal protection. Access to the water is possible from both shore and boat. Divers and snorkellers should remain aware of boat traffic in the area. On-site facilities include showers for post-activity use.

Laurel Branch Campground offers a freshwater snorkeling experience along the shoreline of Barren River Lake. The site features a combination of sandy beach and natural limestone rock formations. Snorkelers can explore these rocky areas at depths ranging from 1 to 5 metres, with an average depth of 3 metres. The site is suitable for beginners, though conditions vary and users should remain aware of boat traffic in the area. Access is via a shore entry. Facilities available at the campground include parking, toilets, and showers. Typical snorkeling sessions last approximately 45 minutes.

Patriot's Point, also known as The Cliffs, is a freshwater site in Barren River Lake defined by dramatic limestone cliff formations. The underwater terrain consists of rocky structures that extend to depths ranging from 5 to 37 metres, with an average depth of 8 metres. Divers and snorkellers should be aware of cold water temperatures, which can drop to 8-9°C in early April. A thermocline typically develops between June and September at depths below 5 metres. The site is accessible by both shore and boat, though users must remain cautious of boat traffic and the deep water. Facilities available on-site include parking, toilets, showers, changing rooms, and a cafe.

Tailwater is a river snorkeling site situated directly below the dam at Barren River Lake. The topography consists of gravelly shoals within the flowing river channel. This site is suitable for advanced snorkelers only, as the water is subject to strong currents. Divers and snorkelers should be aware of potential hazards including low visibility and the risk of entanglement. Shore access is available, and the site provides basic facilities including parking, toilets, and showers. Due to the challenging conditions, this location is rated 2/5 for snorkeling.

Quarry Road Beach is the largest beach on Barren River Lake, situated near the dam. The site features rocky underwater structures that provide habitat for freshwater fish. Due to its proximity to the dam, visibility at this location can reach up to 20 metres, often exceeding that of the lake's upper creek arms. This shore-entry site is suitable for beginners, offering a mild current for snorkelling. Divers and snorkellers should expect variable conditions typical of a freshwater lake environment.